Which of the following best describes an increment of working software? A) An automated test suite to verify functionality delivered in previous i...

Which of the following best describes an increment of working software?

A) An automated test suite to verify functionality delivered in previous iterations.
B) UML diagrams that describe how to verify functionality delivered in previous iterations.
C) A decomposition of all product backlog items into tasks for future backlog lists.
D) Additional features in a usable state that complement those delivered in previous iterations.